As a skeptic, it is often troubling to see the amount of bogosity available in public, much less the Internet, where anyone with some free time can offer advice, and many people just eat them up, with absolutely zero due diligence about the veracity of the information received. It doesn't help when social media, such as Facebook, Twitter, and so on help (inadvertently) spread the misinformation.
Recently, a post on Slate documented how the subreddit /r/askHistorians struggle to control the deliberate misinformation campaign by Holocaust deniers, and how social media, afraid of lawsuits, basically left them to say ANYTHING they wanted. Fortunately, that subreddit has a crew of volunteer moderators that use the banhammer when it was called for.
And what they found about Holocaust deniers applies to ALL sorts of deniers, such as antivaxxers, pyramid scheme and ponzi scheme proponents, and so on. You should go read the article yourself, as I will only be discussing their findings. Deniers generally use these tactics:
Read the rest of the story here: http://amlmskeptic.blogspot.com/2018/07/how-to-combat-falsehoods-its-not-matter.html